Tyre Cavity Noise Reduction via Standardized Element Sequencing
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Solution Overview
Problem
The production of tyres with noise-reducing elements faces challenges in managing variability in inner circumferential extensions, leading to complex logistics, high costs, and reduced productivity due to the need for multiple types of noise-reducing elements with different lengths, which complicates the application process and may result in inadequate soundproofing.
Innovation Solution
A process involving a limited number (from two to four) of sets of noise-reducing elements with uniform dimensions, where each set has a distinct circumferential length, allowing for flexible selection and application to cover various inner circumferential extensions, optimizing noise reduction while minimizing the number of elements and application time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple types of noise-reducing elements with different lengths are used to cover variability in inner circumferential extensions, then adaptability to different tyre sizes is improved, but device complexity and logistical management become worse
Solution Approach 1:
The patent applies universality by using a single standardized length of noise-reducing elements that can be applied to all tyre sizes. The elements are designed to be universally applicable across different inner circumferential extensions, eliminating the need for multiple specialized element types. This single element design serves multiple functions across different tyre models while simplifying logistics and application procedures.
2Reliability
If multiple types of noise-reducing elements with different lengths are used to achieve adequate soundproofing coverage, then acoustic performance is improved, but productivity and application time are worsened
Solution Approach 1:
The patent applies homogeneity by using noise-reducing elements that all have substantially the same length. This uniformity simplifies the application process as workers only need to handle one type of element, reducing application time and increasing productivity. The homogeneous elements are arranged in sequences that provide adequate soundproofing coverage while maintaining consistent handling procedures across all tyre sizes.
3Reliability
If noise-reducing elements are applied to cover the entire inner circumferential extension, then soundproofing effectiveness is improved, but the number of elements and application complexity increase
Solution Approach 1:
The patent applies partial action by using a standardized number of noise-reducing elements per tyre rather than customizing the number and length of elements for each specific tyre size. This approach uses a consistent application pattern that provides sufficient soundproofing coverage without requiring excessive numbers of elements. The standardized approach balances adequate acoustic performance with simplified application procedures.
Data Source
AI summary
The process for producing tyres comprises arranging no more than four sets of noise-reducing elements, each set being associated with a respective dimension Lx different from each other; feeding in succession a set of tyres for vehicle wheels, having different values C of the inner circumferential extension; for each inner circumferential extension value, determining a respective number nx of noise-reducing elements for each set of noise-reducing elements, with x ranging from 1 to N, wherein for at least one value of the inner circumferential extension at least two respective numbers nx differ from 0; for each tyre, collecting from each set of noise-reducing elements the respective number nx of noise-reducing elements and applying the collected noise-reducing elements in circumferential sequence along an inner surface of the tyre, with dimension Lx oriented circumferentially.